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-rw-r--r--sys/miscfs/deadfs/dead_vnops.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/sys/miscfs/deadfs/dead_vnops.c b/sys/miscfs/deadfs/dead_vnops.c
deleted file mode 100644
index 9911453..0000000
--- a/sys/miscfs/deadfs/dead_vnops.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)dead_vnops.c 8.1 (Berkeley) 6/10/93
- * $FreeBSD$
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-#include <sys/poll.h>
-#include <sys/vnode.h>
-
-static int chkvnlock __P((struct vnode *));
-/*
- * Prototypes for dead operations on vnodes.
- */
-static int dead_badop __P((void));
-static int dead_bmap __P((struct vop_bmap_args *));
-static int dead_ioctl __P((struct vop_ioctl_args *));
-static int dead_lock __P((struct vop_lock_args *));
-static int dead_lookup __P((struct vop_lookup_args *));
-static int dead_open __P((struct vop_open_args *));
-static int dead_poll __P((struct vop_poll_args *));
-static int dead_print __P((struct vop_print_args *));
-static int dead_read __P((struct vop_read_args *));
-static int dead_write __P((struct vop_write_args *));
-
-vop_t **dead_vnodeop_p;
-static struct vnodeopv_entry_desc dead_vnodeop_entries[] = {
- { &vop_default_desc, (vop_t *) vop_defaultop },
- { &vop_access_desc, (vop_t *) vop_ebadf },
- { &vop_advlock_desc, (vop_t *) vop_ebadf },
- { &vop_bmap_desc, (vop_t *) dead_bmap },
- { &vop_create_desc, (vop_t *) dead_badop },
- { &vop_getattr_desc, (vop_t *) vop_ebadf },
- { &vop_inactive_desc, (vop_t *) vop_null },
- { &vop_ioctl_desc, (vop_t *) dead_ioctl },
- { &vop_link_desc, (vop_t *) dead_badop },
- { &vop_lock_desc, (vop_t *) dead_lock },
- { &vop_lookup_desc, (vop_t *) dead_lookup },
- { &vop_mkdir_desc, (vop_t *) dead_badop },
- { &vop_mknod_desc, (vop_t *) dead_badop },
- { &vop_open_desc, (vop_t *) dead_open },
- { &vop_pathconf_desc, (vop_t *) vop_ebadf }, /* per pathconf(2) */
- { &vop_poll_desc, (vop_t *) dead_poll },
- { &vop_print_desc, (vop_t *) dead_print },
- { &vop_read_desc, (vop_t *) dead_read },
- { &vop_readdir_desc, (vop_t *) vop_ebadf },
- { &vop_readlink_desc, (vop_t *) vop_ebadf },
- { &vop_reclaim_desc, (vop_t *) vop_null },
- { &vop_remove_desc, (vop_t *) dead_badop },
- { &vop_rename_desc, (vop_t *) dead_badop },
- { &vop_rmdir_desc, (vop_t *) dead_badop },
- { &vop_setattr_desc, (vop_t *) vop_ebadf },
- { &vop_symlink_desc, (vop_t *) dead_badop },
- { &vop_write_desc, (vop_t *) dead_write },
- { NULL, NULL }
-};
-static struct vnodeopv_desc dead_vnodeop_opv_desc =
- { &dead_vnodeop_p, dead_vnodeop_entries };
-
-VNODEOP_SET(dead_vnodeop_opv_desc);
-
-/*
- * Trivial lookup routine that always fails.
- */
-/* ARGSUSED */
-static int
-dead_lookup(ap)
- struct vop_lookup_args /* {
- struct vnode * a_dvp;
- struct vnode ** a_vpp;
- struct componentname * a_cnp;
- } */ *ap;
-{
-
- *ap->a_vpp = NULL;
- return (ENOTDIR);
-}
-
-/*
- * Open always fails as if device did not exist.
- */
-/* ARGSUSED */
-static int
-dead_open(ap)
- struct vop_open_args /* {
- struct vnode *a_vp;
- int a_mode;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
-
- return (ENXIO);
-}
-
-/*
- * Vnode op for read
- */
-/* ARGSUSED */
-static int
-dead_read(ap)
- struct vop_read_args /* {
- struct vnode *a_vp;
- struct uio *a_uio;
- int a_ioflag;
- struct ucred *a_cred;
- } */ *ap;
-{
-
- if (chkvnlock(ap->a_vp))
- panic("dead_read: lock");
- /*
- * Return EOF for tty devices, EIO for others
- */
- if ((ap->a_vp->v_flag & VISTTY) == 0)
- return (EIO);
- return (0);
-}
-
-/*
- * Vnode op for write
- */
-/* ARGSUSED */
-static int
-dead_write(ap)
- struct vop_write_args /* {
- struct vnode *a_vp;
- struct uio *a_uio;
- int a_ioflag;
- struct ucred *a_cred;
- } */ *ap;
-{
-
- if (chkvnlock(ap->a_vp))
- panic("dead_write: lock");
- return (EIO);
-}
-
-/*
- * Device ioctl operation.
- */
-/* ARGSUSED */
-static int
-dead_ioctl(ap)
- struct vop_ioctl_args /* {
- struct vnode *a_vp;
- int a_command;
- caddr_t a_data;
- int a_fflag;
- struct ucred *a_cred;
- struct proc *a_p;
- } */ *ap;
-{
-
- if (!chkvnlock(ap->a_vp))
- return (ENOTTY);
- return (VCALL(ap->a_vp, VOFFSET(vop_ioctl), ap));
-}
-
-
-/*
- * Wait until the vnode has finished changing state.
- */
-static int
-dead_lock(ap)
- struct vop_lock_args /* {
- struct vnode *a_vp;
- int a_flags;
- struct proc *a_p;
- } */ *ap;
-{
- struct vnode *vp = ap->a_vp;
-
- /*
- * Since we are not using the lock manager, we must clear
- * the interlock here.
- */
- if (ap->a_flags & LK_INTERLOCK) {
- mtx_unlock(&vp->v_interlock);
- ap->a_flags &= ~LK_INTERLOCK;
- }
- if (!chkvnlock(vp))
- return (0);
- return (VCALL(vp, VOFFSET(vop_lock), ap));
-}
-
-/*
- * Wait until the vnode has finished changing state.
- */
-static int
-dead_bmap(ap)
- struct vop_bmap_args /* {
- struct vnode *a_vp;
- daddr_t a_bn;
- struct vnode **a_vpp;
- daddr_t *a_bnp;
- int *a_runp;
- int *a_runb;
- } */ *ap;
-{
-
- if (!chkvnlock(ap->a_vp))
- return (EIO);
- return (VOP_BMAP(ap->a_vp, ap->a_bn, ap->a_vpp, ap->a_bnp, ap->a_runp, ap->a_runb));
-}
-
-/*
- * Print out the contents of a dead vnode.
- */
-/* ARGSUSED */
-static int
-dead_print(ap)
- struct vop_print_args /* {
- struct vnode *a_vp;
- } */ *ap;
-{
-
- printf("tag VT_NON, dead vnode\n");
- return (0);
-}
-
-/*
- * Empty vnode bad operation
- */
-static int
-dead_badop()
-{
-
- panic("dead_badop called");
- /* NOTREACHED */
-}
-
-/*
- * We have to wait during times when the vnode is
- * in a state of change.
- */
-int
-chkvnlock(vp)
- register struct vnode *vp;
-{
- int locked = 0;
-
- while (vp->v_flag & VXLOCK) {
- vp->v_flag |= VXWANT;
- (void) tsleep((caddr_t)vp, PINOD, "ckvnlk", 0);
- locked = 1;
- }
- return (locked);
-}
-
-/*
- * Trivial poll routine that always returns POLLHUP.
- * This is necessary so that a process which is polling a file
- * gets notified when that file is revoke()d.
- */
-static int
-dead_poll(ap)
- struct vop_poll_args *ap;
-{
- return (POLLHUP);
-}
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